CN105984185A - Oriented strand board (OSB) - Google Patents
Oriented strand board (OSB) Download PDFInfo
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- CN105984185A CN105984185A CN201510055615.9A CN201510055615A CN105984185A CN 105984185 A CN105984185 A CN 105984185A CN 201510055615 A CN201510055615 A CN 201510055615A CN 105984185 A CN105984185 A CN 105984185A
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Abstract
The invention discloses an oriented strand board (OSB). The OSB comprises an OSB substrate layer, a finishing coat and a fine-grain layer, wherein the fine-grain layer is located between the OSB substrate layer and the finishing coat, a basic unit for forming the fine-grain layer is OSB fines with the grain size of 20 to 200 meshes, and the OSB substrate layer is prepared from laminated wood wastes or rotary-cut plate wastes through laminating. The fine-grain layer is additionally arranged, so that the smoothness of the surface of the OSB is improved greatly; and waterproof treatment on the fine-grain layer can be very easily achieved under the condition that the formaldehyde release volume does not exceed standard.
Description
[technical field]
The present invention relates to oriented wood chipboard, especially floor, Furniture manufacture oriented wood chipboard plate etc..
[background technology]
OSB (Oriented Strandboard) plate, also known as oriented wood chipboard, domestic is also named it for Europe deals.It is a kind of conjunction
Become timber.The source of " OSB "---the formal name used at school of " Europe deals " is oriented structure chipboard (OrientedStrandBoard, 0SB),
It is a kind of from a kind of new type of plate kind European, that develop rapidly in the world the seventies and eighties." Europe deals " (also referred to as "
Liking that the panel ") application on furniture has obtained unprecedented development, a lot of large-scale furniture enterprises all begins to use " OSB " to make
Making furniture, its reason enjoying consumer to like is exactly formaldehydeless release, and durable, and than Midst density thin
Grain plate Hepplewhite is lightweight, and flatness is more preferable.
OSB plate is with small dimension wood, thinnings, reel as raw material, the flaking (of length of being grown up by special equipment processing
As be that 40-100mm length, 5-20mm width, 0.3-0.7mm are thick), through removing oil, be dried, applying glue, orienting spreading,
A kind of directive construction sheet material that the technique such as hot-forming is made.
Its top layer flaking is longitudinal arrangement, and sandwich layer flaking is transversely arranged.This crisscross arrangement, recombinates
Wood grain structure, completely eliminates the wood internal stress impact on processing, is allowed to have outstanding workability with anti-
Tide.Being directive construction owing to OSB is internal, non junction, seamless, slight crack, overall uniformity is good, internal combustion
Intensity is high, so central authorities or edge all have common sheet material, incomparable superpower holds nail ability.
The raw material of " Europe deals " is mainly soft pin, the undersized log of broad-leaved wood, fast-growing thinnings etc., as Eucalyptus, Lignum seu Ramulus Cunninghamiae Lanceolatae,
Poplar thinnings etc., source ratio is wide, and may be produced that significantly panel.Its manufacturing process is mainly certain geometry
The flaking of shape (usually grow 50 millimeters-80 millimeters, wide 5 millimeters-20 millimeters, thick 0.45 millimeter-0.6 millimeter)
Drying, applying glue, orienting spreading and hot-forming.
" OSB ", compared to plate kinds such as plywood, Midst density fine grained plate and core-boards, its linear expansion coefficient is little, surely
Qualitative good, uniform in material, supine human body is higher；Owing to its wood shavings arrange in certain direction, its longitudinal bending resistance
Strength ratio is the most much bigger, therefore can do structural wood, and can be used as primary structure member.It addition, it can be as timber one
Sample carries out sawing, sand, dig, bore, follow closely, the processing such as file, be the good of building structure, interior decoration and Furniture manufacture
Material.
But existing oriented wood chipboard has a shortcoming clearly, it is simply that thickness stability is poor, mainly due to plane
Differing in size of flower, the wood shavings direction of pavement process and angle, it cannot be guaranteed that fully level is with uniformly, can be formed certain
Density gradient, thickness stability is had a certain impact, causes surface irregularity.
It addition, the size for flaking there are certain requirements in prior art, so, come from plywood or rotary-cut plate adds
Man-hour, remaining waste material just cannot be applied to the manufacture of oriented wood chipboard.
[summary of the invention]
In order to overcome the deficiencies in the prior art, the present invention provides a kind of oriented wood chipboard, is keeping the excellent of solid wood composite board
While Dian, there is higher surface smoothness.
To this end, the oriented wood chipboard of the present invention includes OSB substrate layer, finish coat, fine particle layer, fine particle layer is positioned at
Between OSB substrate layer and finish coat, composition fine particle layer elementary cell be mesh number be the OSB fines of 20-200 mesh,
Described OSB substrate layer is to use veneer waste or rotary-cut board waste material pressing to make.
The invention has the beneficial effects as follows: owing to adding fine particle layer so that the flatness of plate surface is greatly promoted,
Reach the peer-level of reinforced composite board, and make to come from plywood or rotary-cut plate adds remaining waste material in man-hour and is applied to
Oriented wood chipboard create possibility.
[accompanying drawing explanation]
Fig. 1 is the oriented wood chipboard structure chart in the embodiment of the present invention.
[detailed description of the invention]
As it is shown in figure 1, the oriented wood chipboard in the embodiment of the present invention includes OSB substrate layer 1, fine particle layer 2 and facing
Layer 3, can also include wear-resisting or fireprotection layer 4 as required.Each layer is respectively described below:
1) timber of OSB substrate layer 1:OSB substrate layer is mainly with Eucalyptus, it is possible to use Malacca wood, Zelkova schneideriana Hand.-Mazz., birch,
Weedtree, poplar etc..This layer uses thicker " flaking " or granule, and it comes from plywood or rotary-cut plate adds man-hour
Remaining waste material, uses OSB plate that this kind of waste material prepare to have to obtain the planarization and thick of difference than common OSB plate traditionally
Degree stability.The present embodiment is just directed to solve this problem.
2) fine particle layer 2: this layer is the key solving planarization problem.In the embodiment of the present invention, this layer uses mesh number
For the OSB fines of 20-200 mesh as elementary cell, add the present invention and first prepare thin of OSB substrate layer then hot pressing
The special process of granulosa so that fines is sufficient filling with the out-of-flatness position in OSB substrate layer, thus substantially increases flat
Whole degree.
3) finish coat 3: finish coat is affixed on outside fine particle layer 2.
4) wear-resisting or fireprotection layer 4: according to plank purposes, aluminium oxide wearing layer, or fireproofed paper can be added the most again.
Wherein, fine particle layer is the layer of most critical in the embodiment of the present invention, and it is to determine whole sheet material flatness, waterproof
The key of property.For this reason, it may be necessary to fine particle layer is done water-proofing treatment.Its water-proofing treatment step is as follows:
(1) preparation fine particle layer marine glue:
A, alkali lignin adds sulphuric acid it is adjusted to pH value be 1.5-2.5, forms insoluble precipitate, filter press, dry
Dry, powdered after finally pulverizing, mesh number is 90-250 mesh, must be acidified the alkali lignin extracted；
B, the alkali lignin extracted with the acidifying of weight ratio 4-6:100 and urea-formaldehyde resin adhesive, mix and blend,
Prepare fine particle layer marine glue eventually.Wherein the composition of urea-formaldehyde resin adhesive, ratio and adhesive-preparing technology can use application number
Be 201310353441.5,201310353442.X, 201310353443.4,201310353433.0,
Technical scheme disclosed in the patent application of 201310353411.4, it would however also be possible to employ following scheme: formaldehyde 1600-2000
Weight portion adds carbamide 600-800 weight portion, polyvinyl alcohol 13-17 weight portion, tripolycyanamide 22-28 weight portion, and
Add 27%-33% aqueous alkali alkali tune, make pH value reach 8-9, heat up, after being incubated 45-55 minute at 89-91 DEG C, cool to 87-89
DEG C, close temperature lowering water, start to adjust 18-22% formalin, in three times, the time is 35-45 minute, PH=5.6-6.0；
Start acid reaction temperature 92 ± 1 DEG C holding；Response time is more than 60 minutes, and sampling sees first in 29-31 DEG C of water
Drip into little silk, alkali tune PH9-9.3；Add secondary carbamide 270-330 weight portion；Triamine 450-550 weight portion；Reaction
More than 55-65 minute, temperature was at 84-86 DEG C；When sampling regards strip as in 24-26 DEG C of water, adjust pH value
8.8-9.2, is incubated 55-65 minute, lowers the temperature 72-77 DEG C and adds three carbamide 145-155 weight portions, tripolycyanamide 24-26
Weight portion, continues to be cooled to 45-55 DEG C, adds hexamethylenetetramine 9-11 weight portion, 45-46 DEG C of discharging.
Wherein alkali lignin can be purchased from the market.
(2) mixing fine grained glue: 1 part of fine particle layer marine glue joined by every 4-6 part fine grained glue, makes into dilute shape.
Wherein fine grained glue is to be reacted by 3.6-4.4:5.4-6.6 weight ratio by carbamide and formaldehyde, heats up at 90 ± 1 DEG C
Lower insulation one hour, then adds the formic acid of 18-22% concentration, reacts 1 hour, then adds the NaOH of concentration 27-33%, adds
Enter amount and reach pH value 4.9-5.1, react one hour to obtain intermedium, be subsequently adding the urine of concentration 13.5-16.5%
Element, addition is that every 100 weight portion intermediums add 9-11 parts by weight of urea, reacts 18-22 minute, stopping of reaction shape
Become liquid glue.Adding concentration 13.5-16.5% carbamide again, addition is that 100 weight portion liquid glues add 8-10 parts by weight of urea,
Deposit standby.
(3) it is sprayed on thin with high-pressure nozzle (selection of pressure size can spray just with liquid glue) with vaporific under room temperature
On grain, stir granule so that it is uniformly.The most every 4 jin of fine grained 0.8-1.2 jin glue.
The processing technology of fine particle layer: the fine grained after water-proofing treatment fits to OSB substrate layer appearance as follows:
1) 20-200 mesh fine grained is put into framed, pave；Its thickness determines according to thickness to be suppressed,
Such as, leading if to be pressed into 0.5 ± 0.1cm fine particle layer, spread fine grain thickness is 4 ± 1cm.
2) precompressed, hot repressing obtains fitting to the fine particle layer 2 of OSB substrate layer 1.
3) three roads are polished:
A, first, with 180 mesh sand；Polish on upper polishers；
B, second, with 240 mesh sand, upper polishers polishes；
C, the 3rd road, with 320 mesh sand, upper polishers polishes.
The elementary cell of composition fine particle layer (fine grained plate) layer is the timber fine grained of 20-200 mesh.
Depending on the thickness of fine particle layer can be according to the purposes of plate, such as: when doing common wealth furniture sheet material, its thickness is desirable
About 0.6mm.Its thickness can also use as poplar plate of the prior art thick.
The attaching process of finish coat:
Finish coat attaching process in the embodiment of the present invention like the prior art, presses to thin at high temperature 160 ± 10 DEG C
On granular layer.Wherein finishing paper himself can have been coated with tripolycyanamide leaching pool glue with outsourcing；Decorative pattern is also by printing house's thing
The most printed.
Embodiment 1,
Alkali lignin adds sulphuric acid being adjusted to pH value is 2.0, forms insoluble precipitate, filter press, is dried,
After rear pulverizing powdered, mesh number is 90-250 mesh, must be acidified extract alkali lignin；Use weight ratio 5:100 again
Acidifying extract alkali lignin and urea-formaldehyde resin adhesive mix and blend, finally prepare fine particle layer marine glue.Then
1 part of fine particle layer marine glue joined by every 5 parts of fine grained glue, makes into dilute shape.
Wherein the composition of urea-formaldehyde resin adhesive, ratio and adhesive-preparing technology are as follows: formaldehyde 1800Kg add carbamide 700Kg,
Polyvinyl alcohol 15Kg, tripolycyanamide 25Kg, with 30% aqueous alkali alkali tune, pH value 8.5, heat up, 90 DEG C ± insulation
Lowering the temperature 88 DEG C after 50 minutes, close temperature lowering water, start to adjust 20% formalin, in three times, the time is 40 minutes,
PH=5.6-6.0；Starting acid reaction, temperature 92 DEG C, keep, the response time is more than 60 minutes, and sampling is at 30 DEG C
Water being seen, first becomes little silk, alkali tune PH9.2；Adding secondary carbamide 300Kg, triamine 500Kg, reaction is more than 60
Minute, temperature is at 85 DEG C；Thread or strip is regarded in sampling in 25 DEG C of water as, adjusts pH value 9, is incubated 60 minutes,
Lower the temperature 75 DEG C, add three carbamide 150Kg, tripolycyanamide 25Kg, continue to cool to 50 DEG C, add six methines four
Amine 10Kg, 45-46 DEG C of discharging.
Wherein fine grained glue is to be reacted by 4:6 weight ratio by carbamide and formaldehyde, heats up and is incubated one hour, so at 90 times
After add the formic acid of 20% concentration, react 1 hour, then add the NaOH of concentration 30%, make pH value reach 5.0, react one
Hour intermedium, be subsequently adding the carbamide of concentration 15%, addition is that every 100 weight portion intermediums add 10 weight portions
Carbamide, reacts 20 minutes, and the stopping of reaction forms liquid glue.Adding concentration 15% carbamide again, addition is 100 weight portions
Liquid glue adds 10 parts by weight of urea, deposits standby.It is sprayed on fine grained with vaporific with high-pressure nozzle the most at normal temperatures,
Stirring granule so that it is uniformly.The most every 4 jin of fine graineds are with 1 jin of glue.Then fine grained is put into framed, paves,
Being spread fine grain thickness is 4cm.Precompressed, hot repressing obtains fitting to the fine particle layer of OSB substrate layer, thickness 0.6mm；
Upper polishers polishes three roads: A, first the most again, with 180 mesh sand；B, second, with 240 mesh sand；C,
Three roads, with 320 mesh sand.Wherein glue used by OSB substrate layer is internal layer marine glue special in this embodiment, its
Be with weight ratio 30:100 acidifying extract alkali lignin and urea-formaldehyde resin adhesive mix together；Wherein institute
The alkali lignin stating acidifying extraction is to prepare by the following method: alkali lignin adds sulphuric acid being adjusted to pH value is 2.0,
Forming insoluble precipitate, filter press, be dried, powdered after finally pulverizing, mesh number is 90-250 mesh.
The assay of above-mentioned real wood strenthening plywood is as follows:
From assay, in the case of flatness is much higher than existing oriented wood chipboard, its resistance to water is close to multiple
Closing solid wood board level, content of formaldehyde does not exceeds standard simultaneously.
Embodiment two:
PH value in embodiment one is adjusted to 1.5 or 2.5, the most still can obtain the result being satisfied in the main.
Embodiment three:
Alkali lignin acidifying in embodiment one extracted and the ratio of urea-formaldehyde resin adhesive are adjusted to 4:100 or 6:
100, the result being satisfied in the main can be obtained after tested.
Embodiment four: use the fine particle layer marine glue in embodiment one instead Application No. 201410057175.6, title
For " lignin-phenol-urea-formaldehyde condensation copolymerization resin adhesive and preparation method ", inventor Sun Run storehouse, Yuan
With the adhesive in the Chinese invention patent application of fine jade etc., the result being satisfied in the main can be obtained after tested.
Claims (8)
1. an oriented wood chipboard, including OSB substrate layer (1), finish coat (3), is characterized in that: also include thin
Granulosa (2), is positioned between OSB substrate layer (1) and finish coat (3), the elementary cell of composition fine particle layer (2)
Be mesh number be the OSB fines of 20-200 mesh, and through fine particle layer marine glue process；Described OSB substrate layer is to use glue
Plywood waste material or rotary-cut board waste material pressing are made.
2. oriented wood chipboard as claimed in claim 1, is characterized in that: be also fitted with in the outside of finish coat (3)
Wear-resisting or fireprotection layer (4).
3. oriented wood chipboard as claimed in claim 1 or 2, is characterized in that: described fine particle layer marine glue is by such as
Lower scheme is formulated: the alkali lignin extracted with the acidifying of weight ratio 4-6:100 and urea-formaldehyde resin adhesive, mixed
Close stirring；The alkali lignin that described acidifying is extracted is to prepare by the following method: alkali lignin is added sulphuric acid and is adjusted to PH
Value is 1.5-2.5, forms insoluble precipitate, filter press, is dried, and final powder is broken into powder, and mesh number is 90-250
Mesh.
4. oriented wood chipboard as claimed in claim 1 or 2, it is characterized in that described fine particle layer marine glue process be by
Following manner is carried out: first fine particle layer marine glue is made into sprayable dilute shape glue, the most often with the mixing of fine grained glue
It is sprayed on fine grained with vaporific with shower nozzle under temperature, stirs granule so that it is uniformly；The most every 4 weight portion granule 0.8-1.2
Weight portion dilute shape glue.
5. oriented wood chipboard as claimed in claim 4, is characterized in that: described fine grained glue is to prepare by following scheme
: pressed the reaction of 3.6-4.4:5.4-6.6 weight ratio by carbamide and formaldehyde, heat up and be incubated one hour at 90 ± 1 DEG C,
Then add the formic acid of 18-22% concentration, react 1 hour, then add the NaOH of concentration 27-33%, make pH value reach 4.9-5.1,
Reacting one hour to obtain intermedium, be subsequently adding the carbamide of concentration 13.5-16.5%, addition is in the middle of every 100 weight portions
Thing adds 9-11 parts by weight of urea, reacts 18-22 minute, and the stopping of reaction forms liquid glue；Add concentration 13.5-16.5% again
Carbamide, addition is that 100 weight portion liquid glues add 8-10 parts by weight of urea.
6. oriented wood chipboard as claimed in claim 4, is characterized in that: described fine particle layer (2) is as follows
Realize: first prepare OSB substrate layer (1), then the fine grained processed through fine particle layer marine glue is put into OSB
In framed on substrate layer (1), paving, precompressed, hot repressing obtains fitting to the fine grained of OSB substrate layer (1)
Layer (2), is processed by shot blasting.
7. oriented wood chipboard as claimed in claim 6, is characterized in that: described polishing has three roads, is respectively as follows: first
Road, with 180 mesh sand；Polish on upper polishers；Second, with 240 mesh sand, upper polishers polishes；3rd road,
With 320 mesh sand, upper polishers polishes.
8. oriented wood chipboard as claimed in claim 3, is characterized in that: described urea-formaldehyde resin adhesive is as follows
Prepare: formaldehyde 1600-2000 weight portion adds carbamide 600-800 weight portion, polyvinyl alcohol 13-17 weight portion, trimerization
Cyanamide 22-28 weight portion, and add 27%-33% aqueous alkali alkali tune, make pH value reach 8-9, heat up, 89-91 DEG C of insulation
Cooling to 87-89 DEG C after 45-55 minute, close temperature lowering water, start to adjust 18-22% formalin, in three times, the time is
35-45 minute, PH=5.6-6.0；Start acid reaction temperature 92 ± 1 DEG C holding；Response time is more than 60 minutes,
Sampling sees that in 29-31 DEG C of water first becomes little silk, alkali tune PH9-9.3；Add secondary carbamide 270-330 weight portion；Three
Amine 450-550 weight portion；Reaction was more than 55-65 minute, and temperature is at 84-86 DEG C；Sampling is regarded as in 24-26 DEG C of water
During strip, adjust pH value 8.8-9.2, be incubated 55-65 minute, lower the temperature 72-77 DEG C and add three carbamide 145-155 weights
Amount part, tripolycyanamide 24-26 weight portion, continue to be cooled to 45-55 DEG C, add hexamethylenetetramine 9-11 weight portion,
45-46 DEG C of discharging.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510055615.9A CN105984185A (en) | 2015-02-03 | 2015-02-03 | Oriented strand board (OSB) |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510055615.9A CN105984185A (en) | 2015-02-03 | 2015-02-03 | Oriented strand board (OSB) |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105984185A true CN105984185A (en) | 2016-10-05 |
Family
ID=57036938
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510055615.9A Pending CN105984185A (en) | 2015-02-03 | 2015-02-03 | Oriented strand board (OSB) |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105984185A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110891780A (en) * | 2017-07-19 | 2020-03-17 | 宜家供应有限公司 | Solid wood particle board |
| US20230219327A1 (en) * | 2022-01-13 | 2023-07-13 | Louisiana-Pacific Corporation | Engineered wood siding, trim and fencing with fire resistant properties |
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| CN203266833U (en) * | 2013-04-20 | 2013-11-06 | 湖北宝源木业有限公司 | OSB high-strength composite wood veneer |
| CN103450431A (en) * | 2013-08-14 | 2013-12-18 | 广西南宁绿园北林木业有限公司 | Production method of low-formaldehyde residue urea-formaldehyde resin |
| CN203792464U (en) * | 2014-04-22 | 2014-08-27 | 李波 | Oriented wood chipboard with small particle surface suitable for veneer overlaying |
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2015
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|---|---|---|---|---|
| US5616419A (en) * | 1995-06-07 | 1997-04-01 | Rohm And Haas Company | Method of producing coating on reconstituted wood substrate |
| CN101698786A (en) * | 2009-10-29 | 2010-04-28 | 曲阜市慧迪化工有限责任公司 | Adhesive for orienting shaving board and production method thereof |
| CN203266833U (en) * | 2013-04-20 | 2013-11-06 | 湖北宝源木业有限公司 | OSB high-strength composite wood veneer |
| CN103450431A (en) * | 2013-08-14 | 2013-12-18 | 广西南宁绿园北林木业有限公司 | Production method of low-formaldehyde residue urea-formaldehyde resin |
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| 齐连丽: "碱木质素改性脲醛树脂的研究", 《中国优秀硕士学位论文全文数据库 工程科技I辑》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110891780A (en) * | 2017-07-19 | 2020-03-17 | 宜家供应有限公司 | Solid wood particle board |
| CN110891780B (en) * | 2017-07-19 | 2022-08-23 | 宜家供应有限公司 | Solid wood particle board |
| US20230219327A1 (en) * | 2022-01-13 | 2023-07-13 | Louisiana-Pacific Corporation | Engineered wood siding, trim and fencing with fire resistant properties |
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